Payment & Shipping Terms:
|Description:||Open Channel Flowmeters||Precision Of Flow:||1%|
|Accuracy Of Level:||0.25% F.S||Level Range:||2m|
|Blind Area Of Probe:||<300 Mm||Weir Type:||Parshall, Square Weir|
|Power:||85-265V AC / 8-36V DC|
open channel flowmeter, ultrasonic flow meters for river volumetric flow measurement, irrigation tunnel
The ultrasonic flowmeters are commonly applied to measure the velocity of liquids that allow ultrasonic waves to pass, such as water, molten sulfur, cryogenic liquids, and chemicals. Transit time designs are also available to measure gas and vapor flow. Be careful because fluids that do not pass ultrasonic energy, such as many types of slurry, limit the penetration of ultrasonic waves into the fluid. In Doppler ultrasonic flowmeters, opaque fluids can limit ultrasonic wave penetration too near the pipe wall, which can degrade accuracy and/or cause the flowmeter to fail to measure. Transit time ultrasonic flowmeters can fail to operate when an opaque fluid weakens the ultrasonic wave to such an extent that the wave does not reach the receiver.
The main function characteristics:
How to use
The velocity of the solid particles in slurry can be different than its liquid carrier fluid. Be careful applying ultrasonic technology when the solid particles can become concentrated in one part of the flowing stream, such as in a horizontal pipe flowing at a relatively low velocity. Be careful when applying Doppler ultrasonic flowmeters in slurry applications because the solid particles can produce strong signals that can cause the Doppler flowmeter to measure the velocity of the solids and not the velocity of the liquid.
For transit time ultrasonic flowmeters, be sure that the fluid can adequately conduct ultrasonic waves, because the flowmeter will not measure when the ultrasonic waves cannot penetrate the flow stream between the transducers. Similarly, ultrasonic waves must be able to penetrate the fluid for Doppler flowmeters to operate accurately. When the fluid is relatively opaque and does not penetrate the fluid, Doppler flowmeters tend to measure the velocity of the fluid at or near the pipe wall, which can cause significant measurement error and/or cause the flowmeter to fail.
|Applicable weirs||Right triangle weir slot (Open size: 500mm)|
|Parshall flume (Larynx way width: 51mm, 76mm, 152mm, 228mm, 300mm)|
|Rectangular weir (Opening size: 250mm, 500mm, 750mm )|
|Flow range||depending on weirs dimensions to be used, up to 335000 m3/hr|
|Flow precision||5% FS|
|Level precision||0.5% FS|
|Sensor blind area||<300mm @ 25C|
|Output||4-20 mA, tri wires|
|Display||LCD display, include: four levels
four transient flow
Eight of the accumulative total flow
16 calendar clock
|Work temperature||50C , customized available|
|Outlet way||Sensor leads 20m, instrument standard plugs|
|Installation||instrument wall mount, sensor grain installation M49x1.5, or clamp on|
Ultrasonic sensor Static pressure sensor
Measurement of water flow in Effluent, Waste Water, Rivers, Canals, Drains, Sewage, etc.
Flow Totalizer parameters
Flow measuring range: Depends on the size of the flume.
Maximum Count: 9999999999
Types of suitable weirs: Triangular weir, rectangular weir, Parshall flume, etc.
Display accuracy: 1 count. Overall accuracy depends on the input signal. Different Weirs /
flumes has different accuracies. A triangular weir has 1 to 2% flow error, a rectangular weir
has 1 to 4% accuracy, a Parshall flume has 3% flow error, etc.
Display: 2.8-inch LCD. Displays Height, Flowrate, Total Flow, etc.
Voltage output: DC 12V or 24V
Signal output: RS485/RS232; 4~20mA; 2 channel relay
The production capacity is 20000 ultrasonic converter and 100,000 ultrasonic sensor.